ISO7721DWR

Overview

The ISO7721DWR is a dual-channel digital isolator from Texas Instruments utilizing capacitive coupling technology. It supports a data rate of 100 Mbps and provides an isolation voltage of 5000 Vrms. The device features a common-mode transient immunity (CMTI) of 85 kV/µs. It operates on a supply voltage range of 2.25 V to 5.5 V and is housed in a 16-SOIC package with a width of 7.50 mm. The component functions within a temperature range of -55°C to 125°C.

Feature Summary

• Capacitive coupling architecture for signal transmission
• Robust isolation barrier with high CMTI
• Wide supply voltage compatibility

Applications

• Industrial automation systems
• Medical equipment
• Power metering applications

Procurement Notes

Verify the specific suffix 'DWR' corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the 16-SOIC footprint matches the design board layout. Ensure the operating temperature range meets the environmental specifications of the final application. Check for any recent product change notices regarding manufacturing site or material composition updates.

Selection Notes

Select this component when dual-channel isolation is required at 100 Mbps speeds. The wide supply range accommodates various logic levels without external level shifters. The reinforced insulation rating suits safety-critical applications. Consider the SOIC package size constraints during PCB layout planning. Verify that the 85 kV/µs CMTI is sufficient for the noise environment of the target system.

Part Context

This part belongs to the ISO772x family of high-speed digital isolators. The family includes variants with different channel counts and pin configurations. These devices are designed to replace traditional transformer and optical couplers in modern designs. They offer improved performance in terms of speed and reliability while maintaining small form factors.

Replacement Considerations

Check for direct replacements within the ISO772x series, such as ISO7721DW, noting differences in packaging or status. Verify functional equivalence if substituting with other dual-channel isolators. Ensure isolation ratings and data rates meet or exceed original requirements.